It didn't really say where Julian had learned how to do that. Though, he does get up and moves towards the office bathroom to wash his hands of the blood. Try to get as much of it off as he could. The doll, he'd left sitting on the couch arm. "Went to military school." Not that it had lasted. "I've also stitched up myself before."
He heads back into the room before sitting down on the floor, out of habit," And now you've got her doll. You think it means anything?"